Samuel w



(No Model.)

S. w. BIGKLEY SELF OPENING AND CLOSING HATCH DOOR 0P ELEVATOR SHAFTS'.

288,612. Patente d Nov. 20, 188 3.

NITED. STATES 1 PATENT. ()FFICE.

SAMUEL w. BIOKL'EY, or MnxIoo,MrssoUnI.

SELF OPENING AND CLOSING HATCH DOOR OF ELEVATOR- SHAFTS.

SPECIFICATION forming part of Letters Patent No. 288,612, dated November 20, 1883.

Application filed March 6, 1883. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL W. BIOKLEY, a citizen of the United States of America, residing at Mexico, in the county of Audrain and State of Missouri, have invented certain new and useful Improvements in Self Opening and Closing Hatch-Doors of Elevator-Shafts, of

I which the following is a specification, refer once being had therein to the accompanying drawings.

My invention relates to certain improvc ments in elevators, and means for automatically closing and opening the shaft through which the car moves.

It consists, mainly, of an elevatorear provided on one of its faces with an upright plate provided with a vertical cam-groove, which terminates at its lower and upper ends with oblique grooves,which, as the car is raised or lowered, engages with a lever-arm connected with and working with other levers, one of which is slotted to give ahorizontal movement to close and open asliding hatch-door at every story.

111 my drawings, Figure l is a plan View of an elevator-shaft, showing the sliding door, elevator=car, &c. Fig. 2is an elevation, showing the timbersof said shaft and the car with its cam-groove, 850. Fig. 3 is a detail view in elevation, showing an auxiliary closing device for the housing-groove of the cam-grooved plate.

Similar reference-letters denote like parts in all of the figures.

Referring to the drawings, Ais the elevatorcar, provided on one of its faces with a plate, B, which has a cam-groove, 0, formed in a vertical line a greater portion of its length, and which terminates at its ends by an oblique movement asit runs out of said plate. This plate B is rigidly fixed to the car, and extends its ends above and below the same.

On one side of the shaft, and extending the entire height of same, is fixed a grooved column, D, which serves asa housing and guide to the cam-plate, and also has a tendency to steady the movement of the car as it moves up and down in the shaft.

E is the hatch or door, arranged to slide 011 ways fixed against the joist of the floor between the flooring and ceiling, and when properly placed is intended to be concealed from view. To facilitate the easy movement of this hatch-door,I may form, the bearings of metal,

or provide anti-friction rollers or wheels, either on said hatch or as substitute for the ways mentioned. At a point, a, in said hatch-door I provide a pinor pivot, 0, provided with antifriction roller, intended to take into the slotted end of a lever, F, pivoted at (E, and conously stated, the free end of the compound lever connected with the said hatch-door is in normal position with hatch-door closed-t. e., when in line with the upper or lower entrances of the cam-groove 0. As the car is lowered the walls of the groove O,impinging upon the side of the bent end of the lever I, forces said lever laterally against the bell-crank lever H, which moves the arm G, which in turn moves the lever-arm F, which latter arm, engaging pin a by its slotted end,carries the hatch-door out to open the way for the downward-moving car. NVhen the plate B reaches thelineof the floor below,its groove in like manner engages a lever corresponding to that of I, and asecond door is opened and held open until the upper oblique portion of the groove 0 forces the said lever-arm back to the normal position, causing a reverse movement to the other lever-arms associated with it, to close the hatchway.

It will be observed that when the proj ecting cam-plate attached to the side of the car is entirely above or below either floor-line, a small opening would be found at said line, which shouldbe closedsimultaneously with the hatchdoor, in order to provide fully against draftpassages 5 and for this purpose Ihave arranged in connection with the cam-plate an auxiliary gate, K, a description of which is as follows:

This gate I secure to a vertical rod, d, provided at its ends with short bent arms 6 The rod d, I hinge at points g h to the body of 'to close the opening in the said column.

the column D, and to the latter, also, Isecurea spring, '5, the free end of which bears against the gate K, to keep it normally closed. One of the vertical edges, as at 76, of the cam-plate is spirally beveled at the top and bottom,so that when in the upward or downward movement of the car said beveled edges come in contact with the arms 6 or f, the rod (1 is revolved ninety degrees, and carries with it the gate K out of the way of the passage of the said cam-plate, said gate returningthereafter, by force of the spring, The end of the lever-arm I is to be provided with an anti-friction roller,.to prevent wear of the groove and modify friction at. that point..

In the construction of the frame-work in the vicinity of the elevator-shaft to which my devices are to apply, due regard must be had to providing at each floor of the building for one of these horizontally-sliding hatch-doors, as it is my intention to open and close the hatchway at each story through the agency of my cam-plate and the levers associated therewithimmediately after the top and bottom of the elevator-car passes the floor-line in its upward and downward movements, so that complete and effective barriers will be formed to prevent any draft movement from following in the wake of the said car, so that in case of fire the elevator-shaft, instead of serving to facilitate the spread of the fiames,will form a damper, to check the same.- I do not wish to confine myself to this precise arrangement of levers or to their direct or indirect connection with the hatch-door.

I am aware that hinged hatch-doors have been closed automatically throughthe engagement of a groove in the cab or car with the arms of levers pivoted to alazy-tongs arrangement, and to such I make no claim; but

What I do claim, and desire to secure by Letters Patent, is

1. The combination, with the car of an elevator, of the plate B, provided with avertical groove having oblique termini at its opposite ends; adapted, in the upward and downward movement of said car,to engage a lever-arm to act upon associated lever-arms to open and SAMUEL W. BIOKLEY.

Witnesses:

ORLANDO HIIT, P. E. LOOKE. 

